Discrete energy assignments for manufacturing specifications
An industrial control system is provided. The system includes tagged data that is collected from a plurality of sustainability factor-associated data sources across an industrial automation environment, where the tagged data is associated with a portion of a process that is attributed to the sustainability factor data sources. A manufacturing model is associated with the tagged data, where the manufacturing model is employed to enhance the efficiencies of the process.
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The claimed subject matter relates generally to industrial control systems and more particularly to monitoring of discrete energy or sustainability factor data and associating such data with a manufacturing component or model such as a bill of material.
BACKGROUNDEnergy demand management, also known as demand side management (DSM) and supply side management, includes actions that influence the quantity or patterns of use of energy consumed by end users, such as actions targeting reduction of peak demand during periods when energy-supply systems are constrained. Ideally, energy use would be optimized by supply and demand interactions in the market. For electricity use in particular, the price paid on the market is often regulated or fixed, and in many cases does not reflect the full cost of production. Electricity use can vary dramatically on short and medium time frames, and the pricing system may not reflect the instantaneous cost as additional higher-cost (“peaking”) sources are brought on-line. In addition, the capacity or willingness of electricity consumers to adjust to prices by altering demand (elasticity of demand) may be low, particularly over short time frames. In many markets, consumers do not face real-time pricing at all, but pay rates based on average annual costs or other constructed prices.
Various market failures can rule out an ideal result for various management schemes. One is that suppliers' costs do not include all damages and risks of their activities. External costs are incurred by others directly or by damage to the environment, and are known as externalities. One approach to this problem would be to add external costs to the direct costs of the supplier as a tax (internalization of external costs). Another possibility is to intervene on the demand side by some type of rebate. In general, energy demand management activities should bring the demand and supply closer to a perceived optimum.
In general, demand for any commodity can be modified by actions of market players and government (regulation and taxation). Energy demand management implies actions that influence demand for energy. Demand side management was originally adopted in energy, where today Demand-Side Management could be, and in some cases is, applied widely to other utilities including water and gas as well.
Reducing energy demand is contrary to what both energy suppliers and governments have been achieving during most of the modern industrial history. Whereas real prices of various energy forms have been decreasing during most of the industrial era, due to economies of scale and technology, the expectation for the future is the opposite. Previously, it was not unreasonable to promote energy use as more copious and cheaper energy sources could be anticipated in the future or the supplier had installed excess capacity that would be made more profitable by increased consumption. In centrally planned economies, subsidizing energy was one of the main economic development tools. Subsidies to the energy supply industry are still common in some countries. Contrary to the historical situation, energy availability is expected to deteriorate while prices rise. Governments and other public actors, if not the energy suppliers themselves, are tending to employ energy demand measures that will increase the efficiency of energy consumption.
The current economic climate and governmental pressures to reduce energy demands and greenhouse gas emission will force manufacturers to explore energy reductions on the plant floor. Generally, industrial energy consumption is impacted by two major variables—environmental changes and production output. Environmental changes (e.g., air temperature, humidity, time of day, and so forth) on facilities' energy consumption can be measured, trended, and controlled through energy tracking software and building automation systems. Production output's impact on energy consumption is generally estimated and not measured.
Currently, there are no direct incentives on the plant floor to reduce energy consumption since it cannot be measured against production volumes, where energy costs are fixed allocations (generally, cost estimated at per month per square foot). Advances in automation can allow manufactures to make better production decisions based on energy availability, real time pricing, and emission caps but it does not go far enough. Moreover, various products and solutions provide energy and emission management from the facility or macro infrastructure (e.g., substations, switchgears, emission monitors). These tools apply production related information against the overall facility energy data to infer energy performance. Others focus energy and emission management on a building management level e.g., Data Centers, lighting, chiller and boilers.
SUMMARY OF THE INVENTIONThe following summary presents a simplified overview to provide a basic understanding of certain aspects described herein. This summary is not an extensive overview nor is it intended to identify critical elements or delineate the scope of the aspects described herein. The sole purpose of this summary is to present some features in a simplified form as a prelude to a more detailed description presented later.
Systems and methods are provided where sustainability factors such as energy are monitored throughout a plant or process and associated with a model such as a bill of material in order to increase plant efficiencies. Automated monitors can receive data from a plurality of sustainability factor data sources that are distributed across an industrial process. Such processes can include discrete processes where automated assemblies occur (e.g., automobile assemblies) or can include batch processes where mixtures of various ingredients are combined to form a recipe or other combination of elements (e.g., chemical process, food process, beverage process, and so forth). As the respective processes are monitored, sources associated with sustainability-factor data such as energy that is collected is tagged to indicate which portion of the discrete or batch process that the source contributed to. After tagging, the data is associated with a manufacturing model such as a bill of material (BOM) for example, where industrial managers or automated processes can then analyze the process for the components of energy that were attributed to the various portions of the respective process. In contrast to prior systems that could only view energy from the overall sense of plant-wide consumptions, the source data that is associated with the BOM can now be analyzed in real-time or via offline modeling to optimize and mitigate energy usage. For example, portions of a process may be rearranged to minimize overall energy usage (e.g., perform step C before step A in order to conserve energy from the reverse order of A and C). It is noted that various models other than BOM models can have associated sustainability factors. Such models include MRP models (material requirement planning), MES models (manufacturing execution system), ERP models (enterprise resource planning), programming models (e.g., ladder logic, SFC, function block), and so forth.
To the accomplishment of the foregoing and related ends, the following description and annexed drawings set forth in detail certain illustrative aspects. These aspects are indicative of but a few of the various ways in which the principles described herein may be employed. Other advantages and novel features may become apparent from the following detailed description when considered in conjunction with the drawings.
An industrial control system is provided that automatically associates captured sustainability factor source data such as energy with a manufacturing model such as a bill of material. In one aspect, an industrial control system is provided. The system includes tagged data that is collected from a plurality of sustainability factor sources across an industrial automation environment, where the tagged data is associated with a portion of a process that is attributed to the sustainability factor sources. A manufacturing model is associated with the tagged data, where the manufacturing model is employed to enhance the efficiencies of the process. The process can be associated with a discrete process or a batch process, where the manufacturing model can be a bill of material, an MRP model (material requirement planning), an MES model (manufacturing execution system), an ERP model (enterprise resource planning), or a programming model, for example. The programming model can include ladder logic, a sequential function chart (SFC), a batch program, or a function block, for example.
It is noted that as used in this application, terms such as “component,” “module,” “source,” and the like are intended to refer to a computer-related entity, either hardware, a combination of hardware and software, software, or software in execution as applied to an automation system for industrial control. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program and a computer. By way of illustration, both an application running on a server and the server can be components. One or more components may reside within a process or thread of execution and a component may be localized on one computer or distributed between two or more computers, industrial controllers, or modules communicating therewith.
Referring initially to
It is noted that in addition to capturing sustainability-factor data according to where the data is captured within a respective process, that other mechanisms can be employed for identifying where the respective data has been generated within the process. For instance, time synchronization procedures can be employed to capture and tag sustainability-factor data that is associated with a given process. This can include information-level correlation of consumption data, using a time stamping methodology such as IEEE 1588, for example. Thus, in addition to capturing data and associating it to a batch or a lot in the controller as described above, sustainability-factor data can be captured as raw data via time stamping routines (e.g., routine that identifies when a procedure occurred and thus identifies where the data originated in the process) and correlating that data in the information space to a batch, lot, process, and so forth through the time stamping process. For example, three processes can be defined as how energy is monitored. For instance, energy monitor X is tied to a drive on a mixer, monitor Y is tied to an oven, and monitor Z is tied to a conveyor. One option would be to store the raw data and let another higher level application (e.g., an energy metric application) link the time stamped data to a batch. Thus, raw data can be evaluated or manipulated when stored according to time stamping procedures.
In another aspect, manufacturing equipment consumes energy when not manufacturing goods (e.g., idle, start up, setup, reconfiguration, and so forth). Original equipment manufactures (OEM) provide operational equipment effectiveness calculations (OEE) as a performance metric but it does not consider energy consumption. With the use of a simple energy efficiency calculation, manufacturers could make more informed decisions on equipment selection, decommission, and so forth. Similar to the miles per gallon standard on a vehicle or the Energy Star cost rating on a water heater. OEMs could differentiate their products from their competition by using this simple calculation. Two packaging machines may meet a rated output of XX units per hour and have similar quality but one could use energy in a less efficient way. The equipment components may be oversized or the control system may be poorly programmed. Ultimately, the equipment is wasting energy. A metric such as Manufacturing energy consumed/Total energy consumed=Percent of efficiency can be provided, for instance. Similarly, a facility level measurement can also be provided (e.g., measured through a rolled-up efficiency calculation).
In general, the system 100 sustainability factors such as energy are monitored throughout a plant or process and associated with the model 150 such as a bill of material in order to increase plant efficiencies. Automated monitors 110 can receive data from a plurality of sustainable sources 120 that are distributed across an industrial process. Such processes can include discrete processes where automated assemblies occur (e.g., packaged assemblies) or can include batch processes where mixtures of various ingredients are combined to form a recipe or other combination of elements (e.g., chemical process, food process, beverage process, and so forth). As the respective processes are monitored at 110, sustainability factor sources 120 such as energy that is collected is tagged at 130 to indicate which portion of the discrete or batch process that the source contributed to. After tagging, the data is associated with the manufacturing model at 160 such as a bill of material (BOM) for example, where industrial managers or automated processes can then analyze the process for the components of energy that were attributed to the various portions of the respective process.
In contrast to prior systems that could only view energy from the overall sense of plant-wide consumptions, the source data that is associated with the BOM (or other model described below) can now be analyzed in real-time or via offline modeling to optimize and mitigate energy usage. For example, portions of a process may be rearranged to minimize overall energy usage (e.g., perform step C before step A in order to conserve energy from the reverse order of A and C). It is noted that various models other than BOM models can have associated sustainability factors. Such models include MRP models (material requirement planning), MES models (manufacturing execution system), ERP models (enterprise resource planning), programming models (e.g., ladder logic, SFC, batch program, function block), and so forth. In general, the system 100 allows extracting energy or other consumption data from the plant floor or other sources of sustainability factor data and correlating it to production output. This enables applying standard production modeling tools for production energy and emission forecasting and optimization, while extending the existing facility demand management system to include production, and lastly, link that system to the Demand Response and Smart Grid (DRSG), as well as, Cap and Trade systems, for example.
It is noted that components associated with the system 100 can include various computer or network components such as servers, clients, controllers, industrial controllers, programmable logic controllers (PLCs), energy monitors, batch controllers or servers, distributed control systems (DCS), communications modules, mobile computers, wireless components, control components and so forth that are capable of interacting across a network. Similarly, the term controller or PLC as used herein can include functionality that can be shared across multiple components, systems, or networks. For example, one or more controllers can communicate and cooperate with various network devices across the network. This can include substantially any type of control, communications module, computer, I/O device, sensors, Human Machine Interface (HMI) that communicate via the network that includes control, automation, or public networks. The controller can also communicate to and control various other devices such as Input/Output modules including Analog, Digital, Programmed/Intelligent I/O modules, other programmable controllers, communications modules, sensors, output devices, and the like.
The network can include public networks such as the Internet, Intranets, and automation networks such as Control and Information Protocol (CIP) networks including DeviceNet and ControlNet. Other networks include Ethernet, DH/DH+, Remote I/O, Fieldbus, Modbus, Profibus, wireless networks, serial protocols, and so forth. In addition, the network devices can include various possibilities (hardware or software components). These include components such as switches with virtual local area network (VLAN) capability, LANs, WANs, proxies, gateways, routers, firewalls, virtual private network (VPN) devices, servers, clients, computers, configuration tools, monitoring tools, or other devices.
It is further noted that the energy manager or processing component 140 is typically a server or computer system such as a batch server for industrial control systems. This can include processing components of a recipe that are subsequently executed by the processing or manager component 140, where the recipe identifies what aspects of a process are employed to produce a given recipe. In one example, an S88 standard provides models that define equipment control, procedure control, and activity. One aspect to implementing this and other standards is creating the ability to separate recipe development from equipment control through the use of an equipment module (not shown) that includes both actual equipment (e.g., tanks, pumps, etc.) and a software representation of the same hardware that includes all the process capabilities. For a given grouping of equipment, each process task is typically designated as a phase against that equipment module. Moreover, the S88 model can function as the manufacturing model 150 in one example for a respective model.
The model can include a process unit that can be broken down into its equipment modules, which represent all the possible tasks for that grouping, where the respective groupings can be associated with sustainability factor source data 120 that has been aggregated and tagged from across the factory or other facilities. Each unit can represent an organization of code in the controller designed by the process engineers that performs a task each time it is called. Each equipment module is also designed to accept one or more parameters. With material addition for example, two parameters specify which material to add and how much. Under the S88 standard, this represents the equipment model. The next step in the S88 standard is the procedural model, where the process engineer maps which equipment modules to call, in what order. This map is called an operation under the standard. For example, the process engineer creates a procedure that supports the ability first to purge the unit, add two materials, mix, react, and then transfer out. This becomes the foundation of a recipe template which can be common to different products, but differentiated by the parameters for each phase. Under this model, the parameters or formulation can be managed independently of operation templates. The process engineers create a family of templates to cover multiple arrangements of equipment usage. The formulators then create parameter sets. At runtime, the proper operation can be matched up with the proper formula set to create an S88 control recipe that can be executed against the equipment. It is to be appreciated procedural models other than S88 can also be employed. Thus, each component of the S88 model can be mapped and associated with a collected piece of sustainable source data 120 and ultimately generated as a model or specification that is tagged at 160 with the items of collected source data. In another aspect, an industrial control system is provided. The system includes means for monitoring (component 110) one or more sustainability factor-associated energy sources. This includes means for identifying (component 130) the sustainability factor-associated energy sources; and means for generating a manufacturing specification (component 140) that reflects at least one sustainability-factor associated energy source.
Turning now to
In some cases, the product itself may be associated with a factor as illustrated in
Automated production lines can monitor some level of energy usage for startup profiles, maintaining recipe optimization, or for regulatory compliance. Manufacturers could, by applying various monitoring components, have the ability to make scheduling, forecasting and optimizing choices against energy demands through the use of standard production simulation tools. They could manipulate schedules to move orders that consume large amounts of energy to off peak pricing (load leveling). Also, in areas where energy has been de-regulated, manufactures will be able to make wiser choices based on manufacturing schedules.
Energy monitoring on the production floor can be tied to an energy tracking software package and correlate production output to the energy consumed. Energy could be metered and the empirical results could be added to the production Bill of Material (BOM). This allows the use of standard production simulation and forecasting tools, as well as, lean six sigma tools to optimize production against additional variables such as energy, rate schedules, and emissions.
Production process simulations performed to analyze labor could be adjusted to analyze energy consumption just by exchanging KWh for minutes, for example. Empirical energy data could be used to optimize energy consumed against products per hour. Lean tools such as value stream mapping could mitigate not just labor waste but energy waste in a manufacturing process. Higher output generally has a negative impact on energy consumption.
Production tools for material forecasting can be used for energy forecasting when energy is added to the BOM 300. Manufacturing can forecast demands on infrastructure such as compressed air, steam, electricity, natural gas, and water, for example. Rates with utility brokers in unregulated areas could be negotiated more accurately. Production emission rates can be calculated and applied to the BOM 300. Again, allowing standard production forecasting tools to forecast emission against Cap and Trade regulations, for example. Energy information on the BOM 300 can aid in prioritizing production schedules to load level demand. Adjusting schedules based on peak demand times can reduce the overall cost of energy consumed.
Referring now to
Proceeding to 510, various sustainability factors are monitored across a factory or plant floor. Such factors can include energy or waste produced by the plant but can include other factors such as motors usage, pipe usage, valve openings and closings, conveyor usage, inventory assignments where the assignments reflect some type of energy or other sustainability factor, and so forth. At 520, the monitored factor data of 510 is tagged to indicate which portion of a production process or product that the sustainability factor is associated with or linked to. Such tagging can include data labels or memory metadata assignments that indicate which portion of the process (discrete or batch) that the sustainability factor is tied to. At 530, the tagged sustainability data is aggregated. Such aggregation can be performed by a processor or energy manager that collects the data from across the plant or across various facilities via a network connection. When collected, the respective data can be associated with a respective manufacturing specification or model at 540. Such specifications can be generated by an MRP system, an MES system, an ERP system, an S88 model, bill of material, or other programming model as noted previously. After the specification has been updated with the sustainability data, other tools such as optimizers, schedulers, simulators, and so forth can analyze the specification to determine where energy or other factors can be minimized or optimized.
A typical electrical utility bill has a component for consumption, kilowatt-hours, and demand, average power over a pre-defined interval. The consumption charge is computed by multiplying the consumption amount by the applicable rate per KW-H. The rate can be constant or it can change based on the time of day, day of week, season, or current rate available in a de-regulated market. A user can achieve consumption cost saving by improving the efficiency of his system and by shifting usage into a time period with a lower rate per KW-H. Demand charge calculation methods vary from utility to utility, but they are almost all based on measuring the average power over an interval, typically 15 or 30 minutes. In some instances, the utility provides a signal to indicate the end/start of a discrete interval, and in some instances the interval is a continuously rolling window. The maximum recorded demand is then used to set the demand charge. The charge may apply only for the month in which it was incurred, or it could apply for considerably longer, perhaps the next 12 months. Controlling demand charges is a more complicated process. It involves setting a peak demand limit that the user desires to stay below. The actual demand is then measured in real-time. The measured demand is used to project what the average power will be at the end of the time interval. If the projected demand equals or exceeds the user defined peak demand limit, action is required. The action could be as simple as manually turning off one or more loads until the next interval begins, or it could involve an automated process. An automated process is usually chosen since it can continuously monitor the situation and react quickly without intervention. The process usually involves identifying various loads that can be shut down for a short time and prioritizing them. The automated system will then shed loads starting with the lowest priority load until the projected demand is below the limit. When a new interval begins, the automated system can re-apply the loads, typically in reverse order, to allow normal system operation. In an industrial facility the production equipment is usually not considered a shed-able load since this would disrupt the manufacturing process. Most often selected loads involve thermal storage such as HVAC or refrigeration, energy storage such as air compressors, or lighting loads.
This strategy can successfully reduce a facility's electric bill, but it does not go far enough. The approach assumes that the supply of electricity is unlimited up to the capacity of the connected electrical distribution equipment and it does nothing to help optimize the cost per unit for the products being produced. To improve this method additional, metering of the system can be employed as previously described and show at 650 of
The availability of the energy requirement profile for various components of the manufacturing line or process also enables an enhancement to the control process. As stated above, the typical method for controlling energy costs is simply turning on or off various portions of a facility. However, in many cases there is another alternative that may be more desirable. Instead of viewing the controllable elements as being either on or off, they can be controlled to operate along the continuum between those two states. In other words, the production line or process can be “modulated” based on the mathematical model. Consider that the facility produces a product that must be heated in an oven for a specific amount of time in order to cure or cook the product. In previous systems, when the cost or availability of energy was not a significant concern, the system would be designed to produce the most finished product possible in the least amount of time while maintaining acceptable quality. This usually provided the best return for the cost expended. In the current higher cost of energy environment this may no longer be true. It may now be a better economic decision to reduce the temperature in the oven and increase the time when the cost of energy is higher. This modulation of the system produces fewer products per unit of time. However, if properly driven by the mathematical model the return on investment can be maximized.
The system 700 of
The subject matter as described above includes various exemplary aspects. However, it should be appreciated that it is not possible to describe every conceivable component or methodology for purposes of describing these aspects. One of ordinary skill in the art may recognize that further combinations or permutations may be possible. Various methodologies or architectures may be employed to implement the subject invention, modifications, variations, or equivalents thereof. Accordingly, all such implementations of the aspects described herein are intended to embrace the scope and spirit of subject claims. Furthermore, to the extent that the term “includes” is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term “comprising” as “comprising” is interpreted when employed as a transitional word in a claim.
Claims
1. An industrial control system, comprising:
- a plurality of discrete monitors configured to acquire a plurality of datasets associated with a plurality of sustainability factors regarding one or more processes within an industrial automation environment, wherein the plurality of sustainability factors comprises energy information and waste information;
- a processor configured to: generate a plurality of tagged datasets based on the plurality of datasets and an association between each of the plurality of datasets with a respective process of the one or more processes; aggregate the plurality of tagged datasets with respect to the respective process of the one or more processes to generate a plurality of aggregated datasets; and generate a manufacturing model configured to enhance one or more energy efficiencies of the one or more processes, wherein the manufacturing model comprises an association between each of the plurality of aggregated datasets and the respective process of the one or more processes; and
- modifying one or more operation schedules of the one or more processes based on the manufacturing model.
2. The system of claim 1, wherein the one or more processes are associated with a discrete process or a batch process.
3. The system of claim 1, wherein the manufacturing model is a bill of material, an MRP model (material requirement planning), an MES model (manufacturing execution system), an ERP model (enterprise resource planning), an S88 model, or a programming model.
4. The system of claim 3, wherein the programming model includes ladder logic, a sequential function chart, a batch program, or a function block.
5. The system of claim 3, wherein the bill of material includes itemized components of the plurality of sustainability factors regarding the one or more processes that are associated with one or more components of a discrete assembly or steps of a batch process.
6. The system of claim 3, wherein the bill of material includes itemized components of the plurality of sustainability factors regarding the one or more processes that are associated with a subset of discrete components or a subset of batch process steps.
7. The system of claim 3, wherein the bill of material includes itemized components of the plurality of sustainability factors associated with a product listing.
8. The system of claim 7, wherein the bill of material includes a peak demand listing or an electrical usage charge.
9. The system of claim 7, wherein the bill of material includes the waste information.
10. The system of claim 1, wherein the plurality of sustainability factors comprises water usage, expected energy use, a type of energy used, a carbon emission, a recyclability factor, an environmental impact factor, a safety factor, or a utility demand factor.
11. The system of claim 1, further comprising a smart grid component that processes the manufacturing model.
12. The system of claim 1, further comprising a demand response component that employs a mathematical model to modulate a manufacturing process based upon at least one of business rules, regulatory restrictions, or energy availability.
13. The system of claim 1, further comprising a historian component to archive data associated with the plurality of sustainability factors.
14. The system of claim 1, further comprising a simulation component to manage energy in accordance with the manufacturing model.
15. The system of claim 1, wherein the plurality of sustainability factors is associated with user rights, work instructions, schedules, material specifications, an intra-material item specification, or routings.
16. The system of claim 1, wherein the plurality of sustainability factors is captured in accordance with a time synchronization procedure.
17. The system of claim 16, wherein the time synchronization procedure is associated with a 1588 standard.
18. The system of claim 1, wherein the manufacturing model determines a percent of efficiency as a ratio of manufacturing energy consumed and total energy consumed.
19. A method of controlling an industrial process, comprising:
- receiving a plurality of datasets from a plurality of energy sources across an automated facility, wherein the plurality of datasets comprise energy information and waste information associated with one or more portions of a process in the automated facility;
- generating a plurality of tagged datasets based on an association between the plurality of datasets and a respective portion of the process;
- aggregating the plurality of tagged datasets with respect to the respective portion of the process to generate a plurality of aggregated datasets;
- adapting a manufacturing specification to record an association between each of the plurality of aggregated datasets and the respective portion of the process; and
- processing the manufacturing specification to mitigate energy associated with the automated facility by altering an operation schedule of the respective portion of the process.
20. The method of claim 19, further comprising adjusting an energy grid in view of the plurality of tagged datasets.
21. The method of claim 19, further comprising generating a bill of material from the manufacturing specification, wherein the bill of material includes: itemized energy consumption data associated with one or more components or one or more process steps of the process, or itemized energy consumption data associated with a products produced by the process.
22. The method of claim 21, further comprising monitoring waste or emissions to update the bill of material.
23. The method of claim 21, further comprising processing the bill of material in a simulator to determine energy savings.
24. An industrial control system, comprising:
- means for monitoring one or more sustainability factor-associated energy sources;
- means for identifying the sustainability factor-associated energy sources;
- means for generating a manufacturing specification that reflects at least one sustainability factor-associated energy source; and
- means for generating a bill of material from the manufacturing specification, wherein the bill of material includes itemized components of sustainability factors associated with components of a process or products produced by the process, wherein the sustainability factors comprise energy information and waste information.
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Type: Grant
Filed: Apr 24, 2009
Date of Patent: Aug 2, 2016
Patent Publication Number: 20100274377
Assignee: ROCKWELL AUTOMATION TECHNOLOGIES, INC. (Mayfield Heights, OH)
Inventors: Philip John Kaufman (Milwaukee, WI), Marcia Elaine Walker (Durham, NC), Steven Anthony Lombardi (Whitewater, WI)
Primary Examiner: Mohammad Ali
Assistant Examiner: Sheela S Rao
Application Number: 12/429,821
International Classification: G06F 19/00 (20110101); G06Q 10/06 (20120101);